Bug 1499287 – Autofs processes hung while waiting for the release of an entry master_lock that is held by another thread waiting on a bind mount

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Bug 1499287 - Autofs processes hung while waiting for the release of an entry master_lock that is held by another thread waiting on a bind mount

Summary:	Autofs processes hung while waiting for the release of an entry master_lock t...

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	autofs (Show other bugs)
Sub Component:
Version:	7.5
Hardware:	Unspecified Linux

Priority	unspecified Severity urgent
Target Milestone:	rc
Target Release:	---
Assigned To:	Ian Kent
QA Contact:	xiaoli feng
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:	1496901
Blocks:
	Show dependency tree / graph

Reported:	2017-10-06 11:44 EDT by Thiago Rafael Becker
Modified:	2018-04-10 14:18 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	autofs-5.0.7-72.el7
Doc Type:	Bug Fix
Doc Text:	Cause: A lock taken during a master map re-read was not being held long enough and was being taken unnecessarily for map reads as well. Consequence: The original lookup can't complete causing autofs to hang. Fix: Fixed by correcting the locking of master map and map reads. Result: autofs no longer hangs due to map dependencies.
Story Points:	---
Clone Of:	1496901
Environment:
Last Closed:	2018-04-10 14:17:12 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Patch - only take master map mutex for master map update (4.13 KB, patch) 2017-10-09 03:10 EDT, Ian Kent	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2018:0977	None	None	None	2018-04-10 14:18 EDT

Groups: None (edit)

Comment 2 Ian Kent 2017-10-09 03:10 EDT

Created attachment 1336147 [details]
Patch - only take master map mutex for master map update

Comment 8 errata-xmlrpc 2018-04-10 14:17:12 EDT

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:0977

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